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Black Leopard, Brookfield Zoo, Chicago: poster by Carken for Federal Art Project, 1936 (Works Projects Administration Poster Collection, Library of Congress)
Polar Bear, Brookfield Zoo, Chicago: poster by Carken for Federal Art Project, 1936 (Works Projects Administration Poster Collection, Library of Congress)
Hippopotamus, Brookfield Zoo, Chicago: poster by Mildred Waltrip for Federal Art Project, 1936 (Works Projects Administration Poster Collection, Library of Congress)
Panda, Brookfield Zoo, Chicago: poster by Frank W. Long for Federal Art Project, 1936 (Works Projects Administration Poster Collection, Library of Congress)
Hippopotamus, Philadelphia Zoo: poster by Louise Welish for Federal Art Project, 1936/1937 (Works Projects Administration Poster Collection, Library of Congress)
Elephant, Philadelphia Zoo: poster by Hugh Stevenson for Federal Art Project, 1936/1937 (Works Projects Administration Poster Collection, Library of Congress)
Penguins, Philadelphia Zoo: poster by Louise Welish for Federal Art Project, 1936/1937 (Works Projects Administration Poster Collection, Library of Congress)
Herons, Philadelphia Zoo: poster by Louise Welish for Federal Art Project, 1936/1937 (Works Projects Administration Poster Collection, Library of Congress)
